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Space

What is a hybrid rocket motor? What advantages does it have over conventional liquid and solid propellant rocket motors? These questions point to an exciting breakthrough that occurred on December 13, 2018, when Virgin Galactic successfully launched VSS Unity on its first suborbital flight.

Shaq does shark week. Ronda Rousey against a bull shark. Bear Grylls faces off with … yes … a shark. Shark Week is full of celebrities having close encounters with one of the ocean’s greatest predators, but did you know early astronauts were also prepared for their own tussle with the fearsome fish?

On July 20, 1969, a whole nation tuned in to see astronaut Neil Armstrong take one small step on the surface of the Moon, ushering in a new era of space exploration. But how did Armstrong and the Apollo 11 astronauts get to the Moon in the first place?

Other planets in our solar system experience seasons, too. On Triton, Neptune’s largest moon, seasons last an average of 40 years, complete with nitrogen snow. Here’s how Triton’s summer solstice compares to Earth’s.